Selected MCQ

Current Question
Which particle has positive charge?
  • A. Electron
  • B. Proton
  • C. Neutron
  • D. Photon
Correct Answer: B
Explanation:
Proton carries +1 charge.
Related Question 1
Which force acts on charged particles?
  • A. Gravitational
  • B. Magnetic
  • C. Electric
  • D. Nuclear
Correct Answer: C
Explanation:
Electric force acts on charges.
Related Question 2
In quantum electrodynamics, the interaction between charged particles is mediated by:
  • A. Gluons
  • B. Photons
  • C. Gravitons
  • D. W bosons
Correct Answer: B
Explanation:
Electromagnetic interactions occur via exchange of virtual photons.
Related Question 3
Which ion has +2 charge?
  • A. Na⁺
  • B. Ca²⁺
  • C. Cl⁻
  • D. O²⁻
Correct Answer: B
Explanation:
Calcium forms +2 cation.
Related Question 4
Which ion is positive?
  • A. Anion
  • B. Cation
  • C. Electron
  • D. Neutron
Correct Answer: B
Explanation:
Cations lose electrons.
Related Question 5
Which phenomenon proves quantization of charge?
  • A. Photoelectric effect
  • B. Millikan oil drop experiment
  • C. Compton scattering
  • D. Interference
Correct Answer: B
Explanation:
Oil drop experiment measured discrete electron charge.